Pressure ranges and accuracy classes for outlet pressure and safety devices

Transcription

1 M2R Two Stage Regulator Applications Pressure reduction for: - Domestic use - Small industrial applications Brief information The two stage pressure regulator M2R is available in various capacity stages, extending from 6, 10 and 25 m 3 /h on the version with integrated low pressure cut-off up to 40 m 3 /h without this feature. It means that the unit is suitable for a broad range of domestic and small commercial applications. The modular concept of the M2R allows a wide range of different connection and equipment variants to match the particular customer requirements. The inline variant is available besides the angled variant. A broad selection of connectors for both inlet and outlet allows the M2R to be adapted with outstanding flexibility to the particular installation requirements. The resetting and the adjustment of the SSV have a very user-friendly design. This also makes it resistant against manipulations. The 2 nd stage has an integrated low pressure cut off valve, which is also used as an excess flow valve. For combined low pressure cut-off/excess flow is an automatic reset feature available, besides manual reset. Technical data: Inlet pressure range p u 0.1 bar to 5 (6) bar Outlet pressure range p ds 18 to 100 mbar p ds 100 to 400 mbar Maximum capacity Q 25 m 3 /h, 40 m 3 /h Pressure set ranges and accuracy classes see table below. Materials Body, cover Springs Orifices Valve disks, diaphragms Internal parts Connecting pieces Precision die cast aluminium Steel, zinc plated Brass Nitrile rubber Acetal Resin, Zinc Alloy Brass or cast iron Main features Modular concept Integrated over pressure Slam Shut Valve (SSV) High accuracy, good lock up Filter integrated Temperature range -20 C to +60 C Inlet pressure resistant up to 16 bar Regulator body is tamper resistant locked A big variety of different connection types: - angled - in line Options: Integrated Low Pressure Cut Off (LPCO) / Excess Flow Cut Off, automatic or manual reset Test plug available (outlet) Limited capacity Relief Valve Safety diaphragm UV stabilised plastic parts for open installation Thermal Cut Off valve (TCO) Pressure ranges and accuracy classes for outlet pressure and safety devices Regulator Slam shut valve Relief valve set range accuracy class lock-up pressure set range accuracy group set range accuracy group [mbar] % % [mbar] % [mbar] % p ds AC 10 SG 20 p so AG o 10 p s p ds (AC 5) (SG 10) above outlet pressure

2 Dimensions Safety devices and accessories Type Weight [kg] M2R 25 A/L ~ 1.5 M2R 25 F 3.7 Integrated filter placed in the inlet connection to retain solid impurities of the gas. Safety Shut-off Valve SSV monitors the outlet pressure and closes the inlet when the outlet pressure exceeds the given set point. The set point of the SSV can be adjusted with a special adjusting tool. Reset is manual. Low Pressure Cut Off LPCO stops the flow in case the downstream pressure falls below a value of about 40% to 60% of the outlet pressure. Excess Flow Cut Off EF interrupts the flow in case of exceeding flow. Limited Capacity Relief Valve RV vents small gas flows in case of overpressure downstream the regulator (e.g. because of temperature increase in the closed downstream pipework). Safety Diaphragm SD to cover the working diaphragm to prevent a gas leakage in case of a destruction. Restricts the leak flow to the atmosphere to less than 30 dm 3 /h. Reset of LPCO/EF can be operated both automatically or manually (option) Automatic reset: a small bypass (30 dm³/h) in the LPCO/EF device enables to increase the outlet pressure until lock up. Downstream pipework has to be closed. Then the LPCO/EF device opens automatically. Manual reset: operate lever for manually opening of the bypass to start reset procedure as described above. Thermal Cut-Off valve TCO closes the inlet in case of fire at a temperature of around 90 C. The device will safely close the inlet. Test plug/nipple for measuring the outlet pressure - 1/8, plugged or alternative with special test nipple. p ds mbar special design of the 2nd stage for outlet pressures between 100 and 400 mbar. 2

3 Configuration RV-L RV-F SD osd p ds mbar (RV-L) 2 nd stage RV-L Relief Valve - Limited Capacity RV-F Relief Valve - Lim. Cap. Full width ½ SD Safety Diaphragm osd Without SD and RV Main Configuration Inlet connection*) A Angled G 3/4 SC ISO 228/1 Test Point configuration Gas L in Line G 3/4 SCt ISO 228/1 otp without Test Plug NG F Flange G 3/4 CF ISO 228/1 TP Test Plug LPG G Thread G 1 CF ISO 228/1 TN Test Nipple others F-G Flange Thread G 1/2 F ISO 228/1 E Coaxial G 3/4 F ISO 228/1 GZ Coax-Meter other connections on request Type Q Main configuration Dimensions*) Inlet connection Outlet connection 2 nd stage LPCO/EF Test point p ds p RV p so Gas M2R M2R 25 A 103/60 G ¾ SC ISO 228/1 G 1 ¼ CF ISO 228/1 RV-L mlpco otp NG sample Set pressures [mbar] Q p ds outlet pressure [m 3 ] Outlet connection *) p RV set point Relief Valve 2.5 G 1 CF ISO 228/1 p so set point SSV 4 G 1 CF BS DN 20 CF GDF Low Pressure Cut-Off configuration 10 G 1 ¼ CF ISO 228/1 alpco automatic reset Low Pressure Cut Off 16 Dimensions *) G ¾ F ISO 228/1 mlpco manual reset Low Pressure Cut Off 25 A : Angled B / A G 1 F ISO 228/1 fmlpco fixed manual Low Pressure Cut Off 40 L : in Line B + C other connections on request olpco without Low Pressure Cut Off *) Dimensions A, B, C and connection configurations please see page 6 3

4 Flow capacity: Inlet pressures M2R 6 flow capacity M2R 10 flow capacity M2R 25 flow capacity 4

5 M2R 25 (400mbar) flow capacity M2R 40 flow capacity (without LPCO) Pressure ranges Type Your contacts Nominal flow rate Qn natural gas [stm 3 /h] Minimum inlet pressure [bar] M2R M2R M2R M2R 25 (pa400) M2R Subject to change without prior notice All rights reserved Elster-Instromet GmbH Elster-Instromet N.V. American Meter Company For your local contact refer to Steinern Str Rijkmakerlaan Welsh Road, Suite Mainz-Kastel, Germany 2910 Essen, Belgium Horsham, PA 19044, USA Tel Tel Tel Fax Fax Fax info@elster-instromet.com M2R EN03 A

6 SC SCt CF CP F M Caption Sphero Conic Sphero Conic & TCO Coupling Flat Coupling Plan Female Male Other connections on request 6